[lldb-dev] [Bug 37986] New: Segmentation fault (core dumped) when loading core dump (armhf on arm64)

via lldb-dev lldb-dev at lists.llvm.org
Fri Jun 29 04:55:02 PDT 2018


            Bug ID: 37986
           Summary: Segmentation fault (core dumped) when loading core
                    dump (armhf on arm64)
           Product: lldb
           Version: 3.9
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at lists.llvm.org
          Reporter: anthony.abate at gmail.com
                CC: llvm-bugs at lists.llvm.org

I get a Segmentation fault (core dumped) error when loading a core dump for a
program that was hung. I created the core dump using gcore 

The process is an armhf (32bit) running on arm64

Easily repeatable, and I have the core dump from lldb if that will help.

Some notes - 
OS: armbian 
kernel: 4.14.21-sunxi64 (custom)
command: lldb-3.9 -c zcore.dump.32684 /path/to/binary
actual output:
(lldb) target create "/path/to/binary" --core "zcore.dump.32684"
Segmentation fault (core dumped)

process is a .Net core 2.1 application which according to docs requires lldb
3.9 for debugging


I can think of a few things going wrong here (given the types of problems i
have had in the past getting everything else working)

1. kernel / os missing features?
2. lldb running 64bit version instead of 32bit (does it even matter?)
3. user error?
4. lldb bug?

Any suggestions, or help is appreciated!

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